The one is, that we look to our feet, and not be forward to crowd into God's presence.
Another is, That we should also look well to our tongues, that they be not rash in uttering anything before God.
And the third is, because of the infinite distance that is betwixt God and us, which is intimated by those words, "For God is in heaven, and thou upon earth."
The Publican therefore shewed great wisdom, holy shame, and humility, in this brave gesture of his, namely, in his standing afar off, when he went up into the temple to pray. But this is not all.
2. The Publican, in standing afar off, left room for an advocate, an high priest, a day's-man to come betwixt, to make peace between God and this poor creature. Moses, the great mediator of the Old Testament, was to go nigher to God than the rest of the leaders, or of the people were. (Exo 20:21) Yea, the rest of the people were expressly commanded to worship, standing afar off. (19:21) No man of the sons of Aaron that hath a blemish was to come nigh. "No man that hath a blemish of the seed of Aaron the priest, shall come nigh to offer the offerings of the Lord made by fire: He shall not come nigh to offer the bread of his God." (Lev 21:21)
The Publican durst not be his own mediator, he knew he had a blemish, and was infirm, and therefore he stands back; for he knew that it was none of him that his God had chosen to come near unto him, to offer the fat and the blood. (Eze 44:13-15) The Publican therefore was thus far right: he took not up the room himself, neither with his person, nor his performances, but stood back, and gave place to the high priest that was to be intercessor.
We read, that when Zacharias went into the temple to burn incense, as at that time his lot was, "The whole multitude of the people were praying without." (Luke 1:9,10) They left him where he was, near to God, between God and them, mediating of them; for the offering of incense by the chief priest was a figurative making of intercession for the people, and they maintained their distance.
It is a great matter in praying to God, not to go too far, nor come too short in that duty. I mean in the duty of prayer, and a man is very apt to do one or the other. The Pharisee went so far, he was too bold, he came into the temple making such a ruffle with his own excellences, there was in his thoughts no need of a Mediator. He also went up so nigh to God, that he took up the room and place of the Mediator himself; but this poor Publican, he knows his distance, and kept it, and leaves room for the High Priest to come and intercede for him with God. He stood afar off, not too far off; for that is the room and place of unbelievers, and in this sense that saying is true, "For, lo, they that are far from thee shall perish" (Psa 73:27): That is, they whose unbelief hath set them in their hearts and affections more upon their idols, and that have been made to cast God behind their backs, to follow and go a whoring after them.
Hitherto therefore it appears, that though the Pharisee had more righteousness than the Publican, yet the Publican had more spiritual righteousness than the Pharisee: And that though the Publican had a baser, and more ugly outside than the Pharisee, yet the Publican knew how to prevail with God for mercy better than he.
As for the Publican's posture of standing in prayer, it is excusable, and that by the very father of the faithful himself: For Abraham stood praying when he made intercession for Sodom. (Gen 18:22,23) Christ also alloweth it where he saith, "And when ye STAND PRAYING, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses." (Mark 11:25) Indeed there is no stinted order prescribed for our thus or thus behaving of ourselves in prayer, whether kneeling, or standing, or walking or lying, or sitting; for all these postures have been used by the godly. "Paul KNEELED down and prayed." (Acts 20:36) Abraham and the Publican STOOD and prayed. David prayed as he WALKED. (2 Sam 15:30,31) Abraham prayed LYING upon his face. (Gen 17:17,18) Moses prayed SITTING. (Exo 17:12) And indeed prayer, effectual fervent prayer, may be, and often is, made unto God, under all these circumstances of behaviour: for God has not tied us to any of them; and he that shall tie himself, or his people, to any one of these, doth more than he hath warrant for from God; and let such take care of innovating, it is the next way to make men hypocrites and dissemblers in those duties, in which they should be sincere.