No doubt there have to be differences among you to show which of you have God's approval.
NIV
For doubtless there have to be factions or parties among you in order that they who are genuine and of approved fitness may become evident and plainly recognized among you.
AMP
For there must be also heresies among you, that they which are approved may be made manifest among you.
KJV
Then Peter came to himself and said, "Now I know without a doubt that the Lord has sent his angel and rescued me from Herod's clutches and from everything the Jewish people were hoping would happen."
NIV
Then Peter came to himself and said, Now I really know and am sure that the Lord has sent His angel and delivered me from the hand of Herod and from all that the Jewish people were expecting [to do to me].
AMP
And when Peter was come to himself, he said, Now I know of a surety, that the LORD hath sent his angel, and hath delivered me out of the hand of Herod, and from all the expectation of the people of the Jews.
KJV
Because God wanted to make the unchanging nature of his purpose very clear to the heirs of what was promised, he confirmed it with an oath.
NIV
Accordingly God also, in His desire to show more convincingly and beyond doubt to those who were to inherit the promise the unchangeableness of His purpose and plan, intervened (mediated) with an oath.
AMP
Wherein God, willing more abundantly to shew unto the heirs of promise the immutability of his counsel, confirmed it by an oath:
KJV
After the people saw the sign Jesus performed, they began to say, "Surely this is the Prophet who is to come into the world."
NIV
When the people saw the sign (miracle) that Jesus had performed, they began saying, Surely and beyond a doubt this is the Prophet Who is to come into the world! [Deut. 18:15, 18; John 1:21; Acts 3:22.]AMP
Then those men, when they had seen the miracle that Jesus did, said, This is of a truth that prophet that should come into the world.
KJV