14 Make thyself an ark of gopher wood: [with] cells shalt thou make the ark; and pitch it inside and outside with pitch. 15 And thus shalt thou make it: let the length of the ark be three hundred cubits, the breadth of it fifty cubits, and the height of it thirty cubits. 16 A light shalt thou make to the ark; and to a cubit high shalt thou finish it above. And the door of the ark shalt thou set in its side: [with] a lower, second, and third [story] shalt thou make it. 17 For I, behold, I bring a flood of waters on the earth, to destroy all flesh under the heavens in which is the breath of life: everything that is on the earth shall expire. 18 But with thee will I establish my covenant; and thou shalt go into the ark, thou, and thy sons, and thy wife, and thy sons' wives with thee. 19 And of every living thing of all flesh, two of every [sort] shalt thou bring into the ark, to keep [them] alive with thee: they shall be male and female. 20 Of fowl after their kind, and of the cattle after their kind, of every creeping thing of the ground after its kind, two of each shall go in to thee, to keep [them] alive. 21 And take thou of all food that is eaten, and gather [it] to thee, that it may be for food for thee and for them.
Matthew Henry's Commentary on Genesis 6:14-21
Commentary on Genesis 6:12-21
(Read Genesis 6:12-21)
God told Noah his purpose to destroy the wicked world by water. The secret of the Lord is with them that fear him, Psalm 25:14. It is with all believers, enabling them to understand and apply the declarations and warnings of the written word. God chose to do it by a flood of waters, which should drown the world. As he chooses the rod with which he corrects his children, so he chooses the sword with which he cuts off his enemies. God established his covenant with Noah. This is the first place in the Bible where the word 'covenant' is found; it seems to mean, 1. The covenant of providence; that the course of nature shall be continued to the end of time. 2. The covenant of grace; that God would be a God to Noah, and that out of his seed God would take to himself a people. God directed Noah to make an ark. This ark was like the hulk of a ship, fitted to float upon the waters. It was very large, half the size of St. Paul's cathedral, and would hold more than eighteen of the largest ships now used. God could have secured Noah without putting him to any care, or pains, or trouble; but employed him in making that which was to be the means to preserve him, for the trial of his faith and obedience. Both the providence of God, and the grace of God, own and crown the obedient and diligent. God gave Noah particular orders how to make the ark, which could not therefore but be well fitted for the purpose. God promised Noah that he and his family should be kept alive in the ark. What we do in obedience to God, we and our families are likely to have the benefit of. The piety of parents gets their children good in this life, and furthers them in the way to eternal life, if they improve it.