It is not mental gymnastics. It is called "believing the bible."
2Peter 1:1 Simon Peter, a servant and an apostle of Jesus Christ, to them that have obtained like precious faith with us through the righteousness of God and our Saviour Jesus Christ.
Let's consider the verse more carefully.
Peter was writing to a diverse audience:
1 Peter 1:1 Peter, an apostle of Jesus Christ, to the strangers scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia,
--These were Christians who had grown up in different nations, abroad, away from their native country of Israel.
--The word "precious" here means "valued," or "honored." Thus for one born abroad they had obtained a precious and honored faith, that body of beliefs, which we have obtained, Their privileges of citizenship were the same as the apostles. The main point to take from this is that "faith" in no way is that intangible "faith" or "belief" in Christ. It is that body of truth, the canon of Scripture which we now believe.
Philippians 1:29 For unto you it is given in the behalf of Christ, not only to believe on him, but also to suffer for his sake.
This verse is speaking of privilege. As it is expressed in some other translations:
(ISV) For you have been given the privilege for the Messiah's sake not only to believe in him but also to suffer for him.
--It is a privilege to believe on him.
--It is a privilege to be saved.
--It is a privilege to suffer for him. The apostles counted themselves worthy to suffer for his sake.
Romans 8:16 The Spirit itself beareth witness with our spirit, that we are the children of God:
Romans 8:17 And if children, then heirs; heirs of God, and joint-heirs with Christ;
if so be that we suffer with him, that we may be also glorified together.
Act 3:16 And his name through faith in his name hath made this man strong, whom ye see and know: yea, the faith which is by him hath given him this perfect soundness in the presence of you all.
Context is demanded to understand this verse.
First it was a "notable miracle" that a miracle of a man who had been a cripple for forty years should be healed. All the people wondered. What was the response of Peter?
Acts 3:12 And when Peter saw it, he answered unto the people, Ye men of Israel, why marvel ye at this? or why look ye so earnestly on us, as though by our own power or holiness we had made this man to walk?
--It was not by Peter's power that made this man to walk. It was by the power of the Lord Jesus. Christ.
In fact if you look further back at the miracle itself the lame man had no faith at all. He wasn't even expecting or asking for a miracle. He was just asking for some money for his needs.
Acts 3:4 And Peter, fastening his eyes upon him with John, said, Look on us.
5 And he gave heed unto them, expecting to receive something of them.
--All that he expected was some money, something to help sustain him. There was no exercise of faith to be healed.
Acts 3:6 Then Peter said, Silver and gold have I none; but such as I have give I thee: In the name of Jesus Christ of Nazareth rise up and walk.
7 And he took him by the right hand, and lifted him up: and immediately his feet and ancle bones received strength.
--This took him by surprise. It was not an exercise of faith on the part of the cripple. It was a miracle of Peter. It was Peter's faith in Christ to perform this miracle.
Acts 3:16 And his name through faith in his name hath made this man strong, whom ye see and know: yea, the faith which is by him hath given him this perfect soundness in the presence of you all.
Vine comments here:
Through faith (ἐπὶ τῇ πίστει)
Note the article: the faith which we had; not the cripple's faith, which was not demanded as a condition of his cure. Through faith (ἐπί) is rather on account of, or on the basis of. Rev., by. Compare Act_2:38; and see on Mat_28:19.
Through faith (ἐπὶ τῇ πίστει)
Note the article: the faith which we had; not the cripple's faith, which was not demanded as a condition of his cure. Through faith (ἐπί) is rather on account of, or on the basis of. Rev., by. Compare Act_2:38; and see on Mat_28:19.
--It was the Peter's faith that healed the cripple, and indeed Peter's faith came from Christ for he was saved. This is not speaking of God giving an unregenerate person faith, which is not taught in the scriptures.
If the man was saved he was saved by putting his faith in Christ, not God's faith in God.or Christ.