Through tongues, God's will is uttered into the earth and instructions are given to you, the angels, demons, principalities, and powers. Praying in the spirit calls forth those things pleasing in the sight of God. Praying in the spirit is required, as is walking in the Spirit.
Walking in the spirit means that, what you see and how you answer problems reflects the thinking and ways of God.
Therefore, ignoring the utterance of tongues is a mistake.
Rom 8:26 Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.
Isa 28:11 For with stammering lips and another tongue will he speak to this people.
In essence, you need to speak in tongues as the Spirit of God gives the utterance. Your natural language is limited. Your natural knowledge has no idea about spiritual matters - it can neither see them, nor hear or learn them. This is why Christ came. Christ came to clean you up and through him, you have an opportunity to experience an abundant life.
Joh 10:16 And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd.
Joh 10:27 My sheep hear my voice, and I know them, and they follow me:
Salvation is created through change and change happens when you are filled with the Holy Ghost with evidence of speaking in other tongues as the Spirit of God gives utterance. Being filled with the Holy Ghost means you have received birth from above. When you receive birth from above you have passed from death unto life and death has no more power over you; fear has no more power over you. Through obedience and learning his ways, sin has no more power over you.
Obedience to the voice of Jesus Christ creates new life (Joh 15:3 Now ye are clean through the word which I have spoken unto you.) Following Jesus Christ is commanded of all saints.
Joh 15:4 Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me.
Joh 15:6 If a man abide not in me, he is cast forth as a branch, and is withered; and men gather them, and cast them into the fire, and they are burned.
Joh 15:7 If ye abide in me, and my words abide in you, ye shall ask what ye will, and it shall be done unto you.
Creating the right results from fasting
Rewards from Jesus Christ cannot be earned except through him. He is the door of the sheepfold.
Joh 10:1 Verily, verily, I say unto you, He that entereth not by the door into the sheepfold, but climbeth up some other way, the same is a thief and a robber.
There is no other way except through service to Christ. None of the services that belong Christ and his seed were given to be handled carelessly, nor to be thought of through or by natural & carnal senses. Discernment of what is true or false can only be seen and felt through the Holy Ghost. Through him, your trust in the Lord is absolute.
There is no other way to be stripped from the outcomes of the flesh except through Christ. None of the services that belong to Christ are shared with the natural man. None of the gifts of the spirit are shared with the natural mind or his senses. The natural mind cannot discern, sense, nor follow the will of God. The will of God is that none perish, and that all come into the knowledge of his son and that all be as he is Holy and without spot in this world.