John Calvin Commentary Psalms 67:6

"The earth hath yielded its increase: God, even our own God, will bless us." — Psalms 67:6 (ASV)

The earth has given its increase. Mention having been made of the principal act of Divine favor, attention then turns to the temporal blessings He bestows upon His children, so that they may have everything necessary to complete their happiness.

It should be remembered here that every benefit God bestowed upon His ancient people was, as it were, a light displayed before the world to draw the nations' attention to Him.

From this, the Psalmist argues that if God generously supplies the needs of His people, the result would be an increase in the fear of His name. This is because all the ends of the earth, witnessing His fatherly care for His own people, would more cheerfully submit to His rule.