Psalm 28:1-2 Unto thee will I cry, O Lord my rock; be not silent to me: lest, if thou be silent to me, I become like them that go down into the pit. Hear the voice of my supplications, when I cry unto thee, when I lift up my hands toward thy holy oracle.
David is ever attentive to the Lord in his life, and especially does he respond to need by crying unto the Lord. He gives voice to his needs and expects the Lord to hear him. He lifts up hands in a posture of praise and reaching out for help. He praises and prays to the holy sanctuary, the place where God dwells. Today God dwells in our hearts by faith, and that where we cry and lift up hands.
If the Lord does not help him he would go down to the pit (go to hell). The Lord is his only hope for help and salvation. If the Lord should fail him, he would be lost forever. But he trusts the Lord, turns to Him, cries out, and lifts up holy hands of praise and supplication toward the holy place where God dwells.
We do the same: turn to the Lord in need, cry unto Him, and lift up hands. And if the Lord does not help we are in deep trouble. We turn to God as first resort, not last. And the Lord does hear our cry and help us in our need. We will not go down to the pit.