Psalm 141

The picture that David paints in verse 2 was one of great familiarity and affection to the believers of his day. All of the men had stood before God's altar their hands raised high in the air with their portion of the sacrifice they had brought. As the grain, oil, and incense were cast onto the blazing fire of the altar they would watch the smoke ascending higher and higher. They believed that it continued up until it reached the throne of God. The prayers that they offered were envisioned to travel the same heavenly trail that the smoke of their sacrifice had blazed. There was a confidence in their prayers and in their sacrifices. A confidence based upon the promises of their faithful God.
It took me less than 2 minutes to read this psalm.
Stuart