"Israel's arrogance testifies against him, but despite all this he does not return to the Lord his God or search for him." NIV translation
Even as their strength was failing and they could see the effects of their sin, they refused to repent. In their arrogance they said that they were God's people but, in fact, they were not. The same type of thing is happening to many people today as they have a false idea of salvation from attending a place of worship as a child and maybe even being sprinkled with some water at a "church". Through this false teaching comes an arrogance and sinning in the face of God.
"'Ephraim is like a dove, easily deceived and senseless - now calling to Egypt, now turning to Assyria. When they go, I will throw my net over them; I will pull them down like birds of the air. When I hear them flocking together, I will catch them.'" NIV translation
A dove flies everywhere in search of the food that they need. In the same manner, Israel had been looking to other countries for its sustenance instead of trusting in the Lord. When God brings down the nations that they have put their trust in, they will be brought down as well. This is a good reminder for us, as Christians, that our trust must be in God alone and not our own efforts or the power of others.
"'Woe to them, because they have strayed from me! Destruction to them, because they have rebelled against me! I long to redeem them but they speak lies against me.'" NIV translation
Instead of listening to God and His correction, they had turned to these great nations for help.
This is much the same as what we see in the world today. God is calling His people to be holy and allowing trials and troubles to refine us but many want to take the easy way out.
So, they turn to governments, false religions, and all kinds of other things instead of listening to Him.
"'They do not cry out to me from their hearts but wail upon their beds. They gather together for grain and new wine but turn away from me. I trained them and strengthened them, but they plot evil against me.'" NIV translation
Instead of looking to God to sustain them, they turned to other nations. His people had forgotten what God had done for them and so, when times got tough, they turned to everyone but God. We see much the same thing in our world today as, even people who say they are Christians, put their hope and trust in government handouts or even secular charitable organizations. In many cases, this occurs because the local body of believers (church) has forgotten what God has done for them and how He has called them to be the source of help for the hurting.
"'They did not turn to the Most High; they are like a faulty bow. Their leaders will fall by the sword because of their insolent words. For this they will be ridiculed in the land of Egypt.'" NIV translation
Because of this lack of faith in God, they would be laughed at by the Egyptians.