Amos 3:1 says, Hear this word that the LORD hath spoken against you, O children of Israel, against the whole family which I brought up from the land of Egypt, saying,  This warning was not just for Israel, but for Judah as well.  They were all God's people, delivered together from Egypt and into the promised land.  This applies to God's people today as well.  We, as followers of Christ, are all equally God's people.  We may separate ourselves by earthly differences, but we are still united in Christ if we are truly following God's word.  What God says to His people applies to all His people.  Verse two says, You only have I known of all the families of the earth: therefore I will punish you for all your iniquities.  This does not mean that God chose, or knew, the people of Israel only for their own benefit, but He chose them to spread His word to all the world.  Since God had revealed Himself to them in a personal way, they had more accountability for their sins.  When we enter into a relationship with Christ, it is not just for our deliverance from sin, but also for our service to God.  Salvation is not just a get out of jail free card, but it is an everlasting relationship with God to do His will.  Verse three asks, Can two walk together, except they be agreed?  If we go back to the garden of Eden, we find God walking with Adam and Eve before they allowed sin to rule them.  Where they had been agreed, now they attempted to hide.  We cannot walk with God if we allow sin back into our lives.  Verse four asks, Will a lion roar in the forest, when he hath no prey? will a young lion cry out of his den, if he have taken nothing?  God was roaring out His warning to His professed people.  They were to be destroyed like a lion destroys its prey, if they did not heed His warning.  When we sin, as followers of Christ, He will roar out His warning to us.  Though we will never lose our salvation if we have accepted Christ as Savior and Lord, if we allow sin back into our lives, we cannot walk freely with God.  Verse five asks, Can a bird fall in a snare upon the earth, where no gin is for him? shall one take up a snare from the earth, and have taken nothing at all?  I believe that this is basically saying that like a bird caught in a snare, something has to tempt or entice us into sin.  If the snare hasn't caught anything, it will remain in place.  Sin is a snare that is always ready to entrap anyone who gets too close.  Verse six asks, Shall a trumpet be blown in the city, and the people not be afraid? shall there be evil in a city, and the LORD hath not done it?  The trumpet blowing was a warning of danger.  When the people heard it, they were to react.  The second part, that where there is evil in the city has God not caused it, I believe means that God has allowed it.  Matthew Henry seems to give God credit for the evil, but I do not believe that God is ever the source of evil.  Verse seven declares, Surely the Lord GOD will do nothing, but he revealeth his secret unto his servants the prophets.  This does not mean that God is not active in the world.  God always makes His will known.  God did this through the prophets then, and I believe that He does it in the life of each individual Christian through the Holy Spirit today.