Eph 2:8-9

For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:

Not of works, lest any man should boast. - Eph 2:8-9

This does not claim that faith is the gift of God. William Lane Craig explains this.

He says that in Greek every noun has a gender: either masculine, feminine, or neuter. The gender of the Greek word faith, which is pistis in the Greek, is feminine. The pronoun this in RSV (Revised Standard Version), or that in KJV (King James Version), which is touto in Greek, in verse 8 has a gender neuter. Obviously the pronouns it and this/that refer to the same antecedent. Also, the words "it is" in verse 8 are italicized in the KJV, meaning they were added by translators, but not present in the manuscripts.

The antecedent of touto is not the word faith. The genders don't match - one is neuter, one is feminine. Therefore, this verse does not say that faith is the gift of God. See William Lane Craig explain this in the video below, which starts at minute 6:00, and see also https://scottthong.wordpress.com/2020/08/19/william-lane-craig-on-romans-9-10-ephesian-2-faith-is-a-gift-of-god/ See also https://redeeminggod.com/faith-gift-of-god-ephesians_2_8-9/