By faith Enoch was translated that he should not see death; and was not found, because God had translated him: for before his translation he had this testimony, that he pleased God.
Faith was the ground of his pleasing God; his pleasing God was the ground of his translation.
Translated (Genesis 5:22; Genesis 5:24) - implying a sudden removal х metetethee (G3346)] (Galatians 1:6) from mortality, without death, to immortality: such a CHANGE as shall pass over the living at Christ's coming (1 Corinthians 15:51-52).
Had (has had) this testimony - namely, of Scripture. х Memartureetai (G3140) (perfect: 'he has been testified of') implies that this testimony continues still.]
Pleased God. So Septuagint translate for "walked with God," Genesis 5:22; Genesis 5:24.