Matthew 10 didn't include the Holy Spirit; Acts did
Acts 1:8 But you will receive power when the Holy Spirit has come
upon you, and you will be my witnesses in Jerusalem and in all Judea
and Samaria, and to the end of the earth.”
Before Acts 1:8 we don't find the Holy Spirit coming upon people when the disciples preached the Gospel or laid hands on the believers. It happens afterward.
Acts 10:44 While Peter was still saying these things, the Holy
Spirit fell on all who heard the word.
Acts 8:17 Then they laid their hands on them and they received
the Holy Spirit.
We also find that it was only after the power received from the Holy Spirit the disciples were able to endure heavy persecutions with joy. Earlier all their preaching of Good news and working of miracles culminated in deserting Jesus when persecution arose as seen in
Matthew 26:56 But all this has taken place that the Scriptures of
the prophets might be fulfilled.” Then all the disciples left him and
fled.
But something tremendous happened after they received the power of the Holy Spirit to be witnesses of Jesus
Acts 5:40-41 English Standard Version (ESV) 40 and when they had
called in the apostles, they beat them and charged them not to speak
in the name of Jesus, and let them go. 41 Then they left the presence
of the council, rejoicing that they were counted worthy to suffer
dishonor for the name.
After the coming of the Holy Spirit in Acts 1:8 their experiences of power was not only ouward ( objective ) but also inward ( subjective ).
Change was from outward to inward. Samson experienced the Holy Spirit as a Spirit of might outwardly.
Judges 14:6 And the Spirit of the LORD came mightily upon him,
and he rent him as he would have rent a kid, and he had nothing in his
hand: but he told not his father or his mother what he had done.
But we know that Samson was not mighty inwardly to endure temptation.
But the disciples with the power of the Holy Spirit to be witnesses of Jesus endure the sufferings of temptations, trials & persecutions with joy.
Colossians 1:10-12 King James Version (KJV) 10 That ye might walk
worthy of the Lord unto all pleasing, being fruitful in every good
work, and increasing in the knowledge of God;
11 Strengthened with all might, according to his glorious power, unto
all patience and longsuffering with joyfulness;
12 Giving thanks unto the Father, which hath made us meet to be
partakers of the inheritance of the saints in light:
Before Acts 1:8 they could only be witnesses before people who saw only their outward lives. But by power of the Holy Spirit to be witnesses of Jesus the disciples were able to be witnesses before spiritual beings who saw all parts of their life.
Ephesians 3:9-11 King James Version (KJV) 9 And to make all men
see what is the fellowship of the mystery, which from the beginning of
the world hath been hid in God, who created all things by Jesus
Christ:
10 To the intent that now unto the principalities and powers in
heavenly places might be known by the church the manifold wisdom of
God,
11 According to the eternal purpose which he purposed in Christ Jesus
our Lord:
The changes were not only in power but also in outook and expectations:
From Earthly to Heavenly
From Physical to Spiritual
From Temporal to Eternal 2 Corinthians 5:1
From merely posessing outwardy ( objective & shakable ) to
possessing inwardly ( subjective & unshakable )
Hebrews 12:26-27 King James Version (KJV) 26 Whose voice then shook
the earth: but now he hath promised, saying, Yet once more I shake not
the earth only, but also heaven.
27 And this word, Yet once more, signifieth the removing of those
things that are shaken, as of things that are made, that those things
which cannot be shaken may remain.
The School of Christ
by T. Austin-Sparks is a good book on this topic.