The Lord God Almighty is the One who actually commands us to call upon Him. Jer.33:3,Amp—”Call to Me and I will answer you, and tell you [and even show you] great and mighty things, [things which have been confined and hidden], which you do not know and understand and cannot distinguish.’” That “call to me” is in, what linguists actually call, the command voice. The Hebrew word for “cry out”, tsa’aq, means to cry out or call out for help unto God under great distress. It also means to cry out in great desperation to Jehovah while in great need. It is the cry that calls out to Jehovah to display His power to glorify His name.