Prayer has always been part of public worship. Prayers that are led in Christian assemblies must meet Biblical standards.
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04082018 I Will Pray with the Understanding
13 Therefore let him who speaks in a tongue pray that he may interpret. 14 For if I pray in a tongue, my spirit prays, but my understanding is unfruitful. 15 What is the conclusion then? I will pray with the spirit, and I will also pray with the understanding. I will sing with the spirit, and I will also sing with the understanding. 16 Otherwise, if you bless with the spirit, how will he who occupies the place of the uninformed say “Amen” at your giving of thanks, since he does not understand what you say? 17 For you indeed give thanks well, but the other is not edified.
18 I thank my God I speak with tongues more than you all; 19 yet in the church I would rather speak five words with my understanding, that I may teach others also, than ten thousand words in a tongue.
— 1Cor. 14:13-19