146:2.13 (1640.2)12. All believers in this gospel should pray sincerely for the extension of the kingdom of heaven. Of all the prayers of the Hebrew scriptures he commented most approvingly on the petition of the Psalmist: “Create in me a clean heart, O God, and renew a right spirit within me. Purge me from secret sins and keep back your servant from presumptuous transgression.” Jesus commented at great length on the relation of prayer to careless and offending speech, quoting: “Set a watch, O Lord, before my mouth; keep the door of my lips.” “The human tongue,” said Jesus, “is a member which few men can tame, but the spirit within can transform this unruly member into a kindly voice of tolerance and an inspiring minister of mercy.”