Sin comes from separation from God = root of sins

Sin is satan's strongest weapon against evangelism 

Know how to overcome sins -> Holy Spirit 

But keep away from the devoted things, so that you will not bring about your own destruction by taking any of them. Otherwise you will make the camp of Israel liable to destruction and bring trouble on it. All the silver and gold and the articles of bronze and iron are sacred to the Lord and must go into his treasury.” (Joshua 6:18, 19 NIV)

When god put you into a service and you fall flat! remember that god will never put you there and let you die! go to him and wrestle with Him, don't sink in self pity, for satan doesn't appreciate  nor have compassion for you

But the Israelites were unfaithful in regard to the devoted things; Achan son of Karmi, the son of Zimri, the son of Zerah, of the tribe of Judah, took some of them. So the Lord ’s anger burned against Israel. Now Joshua sent men from Jericho to Ai, which is near Beth Aven to the east of Bethel, and told them, “Go up and spy out the region.” So the men went up and spied out Ai. When they returned to Joshua, they said, “Not all the army will have to go up against Ai. Send two or three thousand men to take it and do not weary the whole army, for only a few people live there.” So about three thousand went up; but they were routed by the men of Ai, who killed about thirty-six of them. They chased the Israelites from the city gate as far as the stone quarries and struck them down on the slopes. At this the hearts of the people melted in fear and became like water. Then Joshua tore his clothes and fell facedown to the ground before the ark of the Lord, remaining there till evening. The elders of Israel did the same, and sprinkled dust on their heads. And Joshua said, “Alas, Sovereign Lord, why did you ever bring this people across the Jordan to deliver us into the hands of the Amorites to destroy us? If only we had been content to stay on the other side of the Jordan! Pardon your servant, Lord. What can I say, now that Israel has been routed by its enemies? The Canaanites and the other people of the country will hear about this and they will surround us and wipe out our name from the earth. What then will you do for your own great name?” The Lord said to Joshua, “Stand up! What are you doing down on your face? Israel has sinned; they have violated my covenant, which I commanded them to keep. They have taken some of the devoted things; they have stolen, they have lied, they have put them with their own possessions. That is why the Israelites cannot stand against their enemies; they turn their backs and run because they have been made liable to destruction. I will not be with you anymore unless you destroy whatever among you is devoted to destruction. “Go, consecrate the people. Tell them, ‘Consecrate yourselves in preparation for tomorrow; for this is what the Lord, the God of Israel, says: There are devoted things among you, Israel. You cannot stand against your enemies until you remove them. (Joshua 7:1-13 NIV)

Sins always creep into you and hide in you

When tempted, no one should say, “God is tempting me.” For God cannot be tempted by evil, nor does he tempt anyone; but each person is tempted when they are dragged away by their own evil desire and enticed. Then, after desire has conceived, it gives birth to sin; and sin, when it is full-grown, gives birth to death. (James 1:13-15 NIV)

• Death = stagnant, not putting along with God

Go into humility when they sin/ feel accused 

God is fully approachable by repentance 

He is forgiven much, is loved much