Most Relevant Verses
Judah said to Onan, "Go in to your brother's wife, and perform the duty of a husband's brother to her, and raise up seed to your brother." Onan knew that the seed wouldn't be his; and it happened, when he went in to his brother's wife, that he spilled it on the ground, lest he should give seed to his brother. The thing which he did was evil in the sight of Yahweh, and he killed him also.
Behold, children are a heritage of Yahweh. The fruit of the womb is his reward. As arrows in the hand of a mighty man, so are the children of youth. Happy is the man who has his quiver full of them. They won't be disappointed when they speak with their enemies in the gate. A Song of Ascents.
Thus says Yahweh of Armies, the God of Israel, to all the captivity, whom I have caused to be carried away captive from Jerusalem to Babylon: Build houses, and dwell in them; and plant gardens, and eat the fruit of them. Take wives, and father sons and daughters; and take wives for your sons, and give your daughters to husbands, that they may bear sons and daughters; and multiply there, and don't be diminished.
who were born not of blood, nor of the will of the flesh, nor of the will of man, but of God.