In Ps. 16:8, David says that he has “set” the LORD before him. The word, “set” (Heb. shawa), means, “to set together.” (TWOT) David has set himself together with the LORD. David believes in the presence of the LORD with him.
The second line in v. 8 explains the first line, “because he is at my right hand.” The LORD is before David insofar as the LORD is at his right hand. Maclaren best described it, “God is ours only in reality when we are conscious of his nearness.” David is fully conscious of God’s nearness. He has set his heart in the confidence that God is with him, that God is at his right hand.
Because Yahweh is at his right hand, he can then confidently say in v. 8, “I shall not be shaken.” This is the security of faith. Because the LORD is before him, David can say that he is secure against wrong, fearful thoughts. Because the LORD is beside him, David is secure against all threats. Because the LORD is at his side, David is secure against all his enemies.
Are you facing a dangerous situation? Is something bothering you that you cannot sleep well? Call on the Lord in the night—every night. Claim the presence of God. Say with David, Because the Lord is at my side, I will not be shaken.
This is the faith of David. It is a faith that rests on the wisdom of the LORD. It is a faith that rests secure in the presence of the LORD.