John Calvin Commentary Psalms 32:8

"I will instruct thee and teach thee in the way which thou shalt go: I will counsel thee with mine eye upon thee." — Psalms 32:8 (ASV)

I will instruct you, and teach you. So that His exhortation may have greater force, the divine speaker directs His message to each person individually; for the doctrine spoken penetrates the mind more readily when each person applies it particularly to themselves.

When the way of salvation is shown here to the children of God, the greatest care must be taken that no one should depart from it in the slightest degree. We may also learn from this passage that we are reconciled to God on the condition that each person endeavors to make fellow believers partakers of the same benefit.

David, to mark his care for them more strongly, describes it by the sight of the eye. Incidentally, it should be observed that those who are concerned about our welfare are appointed by the Lord as guides for our way, from which it appears how great is the fatherly care He has for us.