David and Anna have been doing ministry together for more than 37 years and they labor in prayer daily in the house of the Lord for the global harvest and the salvation of Israel (Isa. 62:6-7; Joel 2:28-32; Amos 9:11-12; Hab. 2:14; Zech. 13:9; Matt. 9:37-38; Acts 2:17-21; Acts 15:16-18; Rom.11:25-26; Rev. 5:8-10, 15:2-4).
“On your walls, O Jerusalem, I have set watchmen; all the day and all the night they shall never be silent. You who put the Lord in remembrance, take no rest, and give him no rest until he establishes Jerusalem and makes it a praise in the earth.” (Isaiah 62:6-7)