19.How often are we to offer prayer and supplication in the Spirit?

Always.

The experienced saint is learning to pray without ceasing. This means that his whole life is a flowing forward in thanksgiving and prayer in the Spirit. It takes time and wisdom in order to learn how to enter such a walk in the Spirit.

Command upon command, rule upon rule, the Word of God is being created in our personality. As the Word of God is created within us we become increasingly able to flow with the Life of the Godhead. Our life becomes the song, the praise, the burden, the supplication, the will of God in the earth.