The Lord shall increase you more and more - He will increase your numbers and your power. We may suppose that the people were greatly diminished by the captivity, and that on their return to their country their number was comparatively small. This promise of a great increase was in accordance with the cherished wishes of the Hebrew people, and with the repeated promises which God had made to their fathers. Compare Genesis 15:5; Genesis 22:17; Genesis 32:12.
You and your children - The blessing shall be not only on you, but it shall go down to future generations,

The Lord shall increase you more and more,.... The Word of the Lord, as the Targum, shall do it; in a temporal sense, with a numerous posterity, with riches, wealth, and honour; and in a spiritual sense, with an addition of spiritual blessings; with renewed instances of divine layout: with an increase of the gifts and graces of the Spirit of God, as faith, hope, love, joy, patience, humility, and other graces; and with more knowledge of God and Christ, and of divine and spiritual things.
You and your children; not only they that feared the Lord of the present generation, but those that should succeed them, and be as they were, a seed to serve the Lord, and who should be accounted to him for a generation.

Opposed to the decrease pending and during the captivity.