1. Any believer who prays in an unknown tongue prays with his spirit as the Holy Spirit gives utterance, 1Cor 14:2
2. Praying in unknown tongues helps to put the believer’s tongues in control, James 3:8-13
3. Praying in unknown tongues helps to always pray according to the will of God, since it is the Spirit that gives the utterance, and God is a Spirit, Rom 8:26
4. Praying in unknown tongues helps to pray without ceasing, 1 Thess 5:17-20
5. Praying in unknown tongues helps to pray always, Eph 6:18
6. Praying in unknown tongues helps to train the mind in order to hear the voice of God distinctly, 1 Cor 2:9-12
7. Praying in unknown tongues helps to operate the gifts of the Holy Spirit 1 Cor 12:8-10
8. Praying in unknown tongues rejuvenates the mind. As you pray in the spirit, the mind is at rest, Rom 8:11
9. Praying in unknown tongues helps to pray even if you don’t know what and how to pray, Rom 8:26-27
10. Praying in unknown tongues helps to pray for people, things and situations that are in need of prayers but which may not be physically known at the time of prayers, Eph 6:18
11. Praying in unknown tongues helps in self- edification, 1 Cor 14:4
12. Praying in unknown tongues helps in building up one’s spiritual life, Jude 1:20-21
13. Praying in unknown tongues helps one to be alive, lively and conscious of the presence of God, 1 John 2:27
14. Praying in unknown tongues helps to assist others who are spiritually immature, 1Cor 14:22-26