Thus He showed me: Behold, the Lord stood on a wall made with a plumb line, with a plumb line in His hand.  And the LORD said to me, "Amos, what do you see?" And I said, "A plumb line." Then the Lord said: "Behold, I am setting a plumb line In the midst of My people Israel; I will not pass by them anymore. The high places of Isaac shall be desolate,
And the sanctuaries of Israel shall be laid waste. I will rise with the sword against the house of Jeroboam."

                   What Does The Plumb Line Measure?

In the principle of the plumb line, God is measuring our personal relationship with Him. Amos understood that God was using it to test the spirituality, morality, and genuineness of the people against the standard. The test answers the question, "Are they really God's people?" God wants to know if they are exhibiting His characteristics.

This idea of a spiritual standard of measure transferred directly into the New Testament church. God uses similar imagery, a measuring rod, in Revelation 11:1. As we can see from these examples, the end-time church will be tested. How are we going to build? What will the test reveal about our Christian growth (I Corinthians 3:9-16)? We are commanded to grow "to the measure of the stature of the fullness of Christ" (Ephesians 4:13). From this we see that the plumb line is God's revelation of Himself as the standard.

At first, God's revelation of Himself was direct, visible, and personal, but later, as Israel grew, He revealed Himself more verbally through the prophets. They recorded His revelation for all time and all people, and we read it today in our Bibles.

God's law is the primary vehicle He uses to reveal His nature; it defines how He lives. If we want to be in His Kingdom and live as He does, we must obey His law, but obeying God's law in no way minimizes grace. God revealed Himself to Israel first as Redeemer and then as Lawgiver. He freed His people from their slavery in Egypt before He gave them the standard of His law. Grace precedes law. God gives grace first, but He does not leave His people ignorant of the life that pleases Him, which is revealed in His law.

The plumb line combines grace and law, and God will test us against both. If we rely on His grace without law, or on His law without grace, we will not pass the test. If either is abused, we will not measure up to the standard.

Leviticus 19 shows that the revelation of the law is important because it is a verbal description of God's nature. Our God is a holy God (verse 2), and He expects His representatives to be holy also. But how do we become holy?

God loves His people and gives them redemption, grace. He expects it will result in obedience to His law, the reflection of His nature, so on occasion, He holds a plumb line against them to check their progress. But when He sees that they have rejected His way of life, He has no choice but to try to guide them to repentance-by any means necessary.