Peter replied, "Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins. And you will receive the gift of the Holy Spirit."
NIV
And Peter answered them, Repent (change your views and purpose to accept the will of God in your inner selves instead of rejecting it) and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of and release from your sins; and you shall receive the gift of the Holy Spirit.
AMP
Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
KJV
They devoted themselves to the apostles' teaching and to fellowship, to the breaking of bread and to prayer.
NIV
And they steadfastly persevered, devoting themselves constantly to the instruction and fellowship of the apostles, to the breaking of bread [including the Lord's Supper] and prayers.
AMP
And they continued stedfastly in the apostles' doctrine and fellowship, and in breaking of bread, and in prayers.
KJV
All of them were filled with the Holy Spirit and began to speak in other tongues as the Spirit enabled them.
NIV
And they were all filled (diffused throughout their souls) with the Holy Spirit and began to speak in other (different, foreign) languages (tongues), as the Spirit kept giving them clear and loud expression [in each tongue in appropriate words].
AMP
And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
KJV
"People of Israel, listen to this: Jesus of Nazareth was a man accredited by God to you by miracles, wonders and signs, which God did among you through him, as you yourselves know."
NIV
You men of Israel, listen to what I have to say: Jesus of Nazareth, a Man accredited and pointed out and shown forth and commended and attested to you by God by the mighty works and [the power of performing] wonders and signs which God worked through Him [right] in your midst, as you yourselves know--
AMP
Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:
KJV
When the people heard this, they were cut to the heart and said to Peter and the other apostles, "Brothers, what shall we do?"
NIV
Now when they heard this they were stung (cut) to the heart, and they said to Peter and the rest of the apostles (special messengers), Brethren, what shall we do?
AMP
Now when they heard this, they were pricked in their heart, and said unto Peter and to the rest of the apostles, Men and brethren, what shall we do?
KJV
"In the last days, God says, I will pour out my Spirit on all people. Your sons and daughters will prophesy, your young men will see visions, your old men will dream dreams."
NIV
And it shall come to pass in the last days, God declares, that I will pour out of My Spirit upon all mankind, and your sons and your daughters shall prophesy [telling forth the divine counsels] and your young men shall see visions (divinely granted appearances), and your old men shall dream [divinely suggested] dreams.
AMP
And it shall come to pass in the last days, saith God, I will pour out of my Spirit upon all flesh: and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams:
KJV
"Therefore let all Israel be assured of this: God has made this Jesus, whom you crucified, both Lord and Messiah."
NIV
Therefore let the whole house of Israel recognize beyond all doubt and acknowledge assuredly that God has made Him both Lord and Christ (the Messiah)--this Jesus Whom you crucified.
AMP
Therefore let all the house of Israel know assuredly, that God hath made the same Jesus, whom ye have crucified, both Lord and Christ.
KJV
Praising God and enjoying the favor of all the people. And the Lord added to their number daily those who were being saved.
NIV
Constantly praising God and being in favor and goodwill with all the people; and the Lord kept adding [to their number] daily those who were being saved [from spiritual death].
AMP
Praising God, and having favour with all the people. And the Lord added to the church daily such as should be saved.
KJV