And all the days of Enoch were three hundred sixty and five years:

Matthew Henry's Concise Commentary

5:21-24 Enoch was the seventh from Adam. Godliness is walking with God: which shows reconciliation to God, for two cannot walk together except they be agreed, Am 3:3. It includes all the parts of a godly, righteous, and sober life. To walk with God, is to set God always before us, to act as always under his eye. It is constantly to care, in all things to please God, and in nothing to offend him. It is to be followers of him as dear children. The Holy Spirit, instead of saying, Enoch lived, says, Enoch walked with God. This was his constant care and work; while others lived to themselves and the world, he lived to God. It was the joy of his life. Enoch was removed to a better world. As he did not live like the rest of mankind, so he did not leave the world by death as they did. He was not found, because God had translated him, Heb 11:5. He had lived but 365 years, which, as men's ages were then, was but the midst of a man's days. God often takes those soonest whom he loves best; the time they lose on earth, is gained in heaven, to their unspeakable advantage. See how Enoch's removal is expressed: he was not, for God took him. He was not any longer in this world; he was changed, as the saints shall be, who are alive at Christ's second coming. Those who begin to walk with God when young, may expect to walk with him long, comfortably, and usefully. The true christian's steady walk in holiness, through many a year, till God takes him, will best recommend that religion which many oppose and many abuse. And walking with God well agrees with the cares, comforts, and duties of life.