"And He that searcheth the hearts knoweth what is the mind of the Spirit, because He maketh intercession for the saints according to the will of God. And we know that all things work together for good to them that love God, to them who are the called according to His purpose. For whom He did foreknow, He also did predestinate to be conformed to the image of His Son, that He might be the firstborn among many brethren. Moreover whom He did predestinate, them He also called: and whom He called, them He also justified: and whom He justified, them He also glorified" (Rom. 8:26-30).
"I say then, Hath God cast away His people? God forbid. For I also am an Israelite, of the seed of Abraham, of the tribe of Benjamin. God hath not cast away His people which He foreknew" (Rom. 11:1-2).
"Peter, an apostle of Jesus Christ, to the strangers scattered throughout Pontus, Galatia, Cappadocia, Asia, and Bithynia, elect according to the foreknowledge of God the Father, through sanctification of the Spirit, unto obedience and sprinkling of the blood of Jesus Christ: Grace unto you, and peace, be multiplied" (1 Pet. 1:1-2).
"Forasmuch as ye know that ye were not redeemed with corruptible things, as silver and gold, from your vain conversation received by tradition from your fathers; but with the precious blood of Christ, as of a Lamb without blemish and without spot: Who verily was foreordained before the foundation of the world, but was manifest in these last times for you, Who by Him do believe in God, that raised Him up from the dead, and gave Him glory; that your faith and hope might be in God" (1 Pet. 1:18-21).
Saving faith comes by believing the Word of God.