Excellent question that displays considerable thought!
First, the verb παραστῆσαι is an aorist infinitive. This form of the verb in Greek is essentially tenseless - no time is involved. It could be distant past, recent past, present or future. Such verb are almost always closely associated with another verb that implies the tense. Note the surrounding text from BLB with verbs bolded. Verses 21-23 form a single sentence in the Greek.
21 And you, being once alienated and hostile in mind, in the evil deeds, 22 but now He has reconciled in His body of
flesh through death, to present you holy and unblemished and
blameless before Him, 23 if indeed you continue in the faith,
established and firm, and not being moved away from the hope of the gospel that you have heard, having been proclaimed in all
creation under heaven, of which I Paul have become a minister.
Note that none of these verbs in in the future tense. Paul is consistently discussing present realities as a contrast from being "once alienated". That is, the force of Paul's thought is simple:
- we (as sinners) were once alienated
- we (as sinners) have now been reconciled via the medium of the death of His body
- we are now presented to God as blameless
- we remain blameless if we continue in the faith, established if we are not moved away
This idea of present blamelessness or "justification" is a common idea in NT theology. Here is another example:
1 Cor 6:9-11 - Do you not know that the wicked will not inherit the
kingdom of God? Do not be deceived: Neither the sexually immoral, nor
idolaters, nor adulterers, nor men who submit to or perform homosexual
acts, nor thieves, nor the greedy, nor drunkards, nor verbal abusers,
nor swindlers, will inherit the kingdom of God. And that is what some
of you were. But you were washed, you were sanctified, you were
justified, in the name of the Lord Jesus Christ and by the Spirit of
our God.
Notice that Paul regards forgiven/justified sinners as sanctified, and that this sanctification is past completed act; "you were sanctified". That is, to present someone as holy is to sanctify them (same words in the Greek!) See appendix below.
Thus, a person is made holy, or sanctified, or set apart for Christ, at conversion. This is not to suggest that we become perfect at conversion, far from it! Conversion or sanctification merely starts the process of growing into Christ which is a divine miracle in itself (the subject of another question!)
Thus, I read both from the grammar of Col 1:22 and the rest of NT theology, that Jesus, by the merits of His blood and body (ie, His sacrifice on Calvary) presents us holy, ie, sanctifies us to God, sets us apart for divine service. That is "holy" here means to be set apart; it does not mean perfect. Perfection only occurs by another divine miracle when the Lord returns.
APPENDIX - Sanctification = making holy
In the New Testament the word “sanctification” is a translation of the Greek hagiasmos, and is equivalent to the Hebrew qadesh. Both mean holiness, consecration, sanctification, from the verb form meaning “to make holy” or “to set apart from common use”.
Let us list the relatively few occurrences of the Greek word hagiasmos: According to W E Vine , the occurrences of this noun can be classified as follows: (a) separation to God, 1 Cor 1:30, 2 Thess 2:13, 1 Peter 1:2; and (b) the course of life befitting those so separated, 1 Thess 4:3, 4, 7, Rom 6:19, 22, 1 Tim 2:15, Heb 12:14. From these, we observe that the task of sanctification is accomplished by the Holy Spirit (2 Thess 2:13, 1 Peter 1:2) and (via?) the Word.
The verb form, hagiazo, to sanctify or set apart, in the New Testament tells us that God’s sanctifying influence on the believer is via His Truth and Word (John 17:17, 19, Acts 20:32) by faith in Jesus (Acts 26:18, 1 Cor 1:2, 2 Tim 2:21, Heb 10:10, 29 ) through the Holy Spirit (Rom 15:16, 1 Cor 6:11). Note that these verbs are past tense, and discuss sanctification as a completed act (see also Heb 13:12).
[However, in a few instances, the work of sanctification is set in the present as an on-going process. This process of setting apart is described as a washing of water of the Word (Eph 5:26) by the one who sanctifies (Heb 2:11, 10:14). Ceremonial sacrifices outwardly sanctify those defiled (Heb 9:13).]
Thus, when a person is converted and becomes set apart for Christ (ie, becomes a Christian) the person immediately becomes a “saint” or “holy one” (Rom 1:7, 1 Cor 1:2, Phil 1:1, etc.). Sometimes these saints are called “elect” or “chosen” (Matt 24:22, 24, 31, Mark 13:20, 22, 27, Rom 11:7, 1 Tim 5:21, 2 Tim 2:10, Tit 1:1, 1 Peter 1:1), or the pure or purified (Matt 5:8; 2 Cor 11:2, Titus 1:15, 1 Peter 1:22). That is, as far as the Christian is concerned, sanctification (in the Biblical sense) occurs at conversion as a decision to follow Jesus, and occurs at some point in (past) time.
A very similar situation exists in the Old Testament where various things are set aside from common use and thus as sanctified, eg, the Sabbath, (Gen 2:3, Ex 20:11, 31:15), Israelites (Lev 19:20:7, 26, Deut 7:6, 14:2, 21, 26:19), various parts of the tabernacle (Ex 30:10, 37, 39:30) and property (Lev 27:14, 23, 28, 30, 32, Eze 48:14). Notice that such things were holy or sanctified, not because of any innate quality but by decision of man or God to set the person or object apart from common use, even a city dump (Jer 31:40).
Lastly, notice that a state of partial sanctification is unknown in the Bible – an object or person is either sanctified or it is not (1 Thess 5:23).
In modern theology, the word “sanctification” is used in a quite different (extra-Biblical) sense of a growing into Christ, Christian development and character building. This is not to suggest that the idea is unbiblical, but rather that the Bible uses different terminology. That is, there is a difference between Bible sanctification and theological sanctification. Here is a sample:
- But we know that when he appears, we shall be like him, for we shall see him as he is. Everyone who has this hope in him purifies himself, just as he is pure. 1 John 3:2, 3
- But if anyone does not have them, he is nearsighted and blind, and has forgotten that he has been cleansed from his past sins. Therefore, my brothers, be all the more eager to make your calling and election sure. For if you do these things, you will never fall. 2 Peter 1:9, 10.
Notice the developing pattern, the saved person continues to make the decision to be one of the elect or pure by keeping separate from the world: Only let us live up to what we have already attained. Phil 3:16. This text tells us to act in accordance with our decision to follow Jesus and to be one of the “saints”.
- But you, man of God, flee from all this, and pursue righteousness, godliness, faith, love, endurance and gentleness. Fight the good fight of the faith. Take hold of the eternal life to which you were called when you made your good confession in the presence of many witnesses. 1 Tim 6:11, 12.
- We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life. Rom 6:4.
- Therefore, I urge you, brothers, in view of God's mercy, to offer your bodies as living sacrifices, holy and pleasing to God--this is your spiritual act of worship. Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God's will is – his good, pleasing and perfect will. Rom 12:1, 2.
- Since we have these promises, dear friends, let us purify ourselves from everything that contaminates body and spirit, perfecting holiness out of reverence for God. 2 Cor 7:1.
- Instead, speaking the truth in love, we will in all things grow up into him who is the Head, that is, Christ. From him the whole body, joined and held together by every supporting ligament, grows and builds itself up in love, as each part does its work. Eph 4:15, 16.
- But one thing I do: Forgetting what is behind and straining toward what is ahead, I press on toward the goal to win the prize for which God has called me heavenward in Christ Jesus. Phil 3:13, 14.
- So then, just as you received Christ Jesus as Lord, continue to live in him, rooted and built up in him, strengthened in the faith as you were taught, and overflowing with thankfulness. Col 2:6, 7.