Psalms 27:7-10

Apparently David was not getting the help he needed, so he appealed earnestly to the Lord. In the Mosaic Law, God told His people to remember Him and to draw near to Him rather than abandoning Him. David was doing just that, so he asked God not to abandon him or remain silent when he requested deliverance. He reminded the Lord that he was His servant because lords did not normally deny their servants access to their presence. God could reject David’s plea because he was a sinner, so the psalmist acknowledged the possibility that God would turn him away.

Psalms 27:10 should probably be a conditional statement: "If my father . . .". David’s point in this verse was that even if those who were most supportive of him on earth would forsake him, he knew even then that the Lord would not abandon him.