Altar

Gen. 22:9(NIV)When they reached the place God had told him about, Abraham built an altar there and arranged the wood on it. He bound his son Isaac and laid him on the altar, on top of the wood.

A place of sacrifice/repentance

Heb.9:22(NIV) In fact, the law requires that nearly everything be cleansed with blood, and without the shedding of blood there is no forgiveness.

A place of prayer

1 Kings 8:54(NASB) When Solomon had finished all these prayers and supplications to the Lord, he rose from before the altar of the Lord, where he had been kneeling with his hands spread out toward heaven.

A place of healing

James 5:14-15(NASB) Is anyone among you sick? Then he must call for the elders of the church and they are to pray over him, anointing him with oil in the name of the Lord; and the prayer of faith will restore the one who is sick, and the Lord will raise him up, and if he has committed sins, they will be forgiven him.

A place of ministry

James 5:16(NIV) Therefore confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous person is powerful and effective.

Humility

Sincerity

Surrender

The altar is the place for alterations!