Every church is to be a house of prayer for the nations (Mark 11:17). The four foundational pillars for that “house of prayer” are the glory of God, the advancement of Christ’s Kingdom, the Gospel, and the divine desperation. The first three building stones for that “house of prayer” are: praying the heart of Jesus, praying the name of Jesus, and praying the Word of God.
The next building stone is praying in the Spirit. A lot of ink through the centuries has been spilled on what it means to pray in the Spirit.
We are all commanded in Ephesians 6:18, “With all prayer and petition pray at all times in the Spirit, and with this in view, be on the alert with all perseverance and petition for all the saints.”
Some believe this means praying in one’s own prayer language which is possible from 1 Corinthians 14:14-15. Others believe this is prayer that is fervent and intense.
Given the context, I believe it means praying prevailing prayer. As someone said, “pray until you have prayed, and God has heard your cry“. Let me give you an example. When I first start jogging, I just want to quit. I hate the first mile. I have to jog through that first mile, then I feel like I have gone for a run. Prayer is the same way. We have to persevere in prayer and pray through until we know we have the mind of the Spirit as we pray. Then we know we are praying God’s will.
This is what our Lord Jesus did as He prayed at Gethsemane. He prayed until He was fully surrendered and in agreement with His Heavenly Father. We must pray the same way. Pray through an issue until you know you have the mind of the Spirit. It may take ten minutes, or it may take hours, or perhaps days (see Daniel 10 for an example of 3 weeks of prayer).
Keep persevering in prayer and do not give up. That is what it means to Pray in the Spirit.