When speaking that God is merciful with us, it is being said that this of mercy is a kind gesture of God with all those who seek Him. The mercy of God is great for the whole world.
But if from there you seek the Lord your God, you will find him if you seek him with all your heart and with all your soul.
When we seek the Lord with all our heart and ask Him, He will not reject us because He is a God who does not reject or despise an afflicted heart. He is God, shows mercy to all His children.
If you seek the Lord in all the place and call Him He will answer and you will find Him, He will listen to you and protect you from all evil. The word of God says that if we knock at His door He will open, that if we call He will respond, and that if we search we will find Him, because He is a God who pities those who seek Him in spirit and in truth.
When you are in distress and all these things have happened to you, then in later days you will return to the Lord your God and obey him.
In those times there were many people who only looked for God when they had needs, these people for not to hear the voice of God the evil came and reached them. We can not rule out that in these times we have people who are the same as those of the past, who only looked for God when they needed Him.
For the Lord your God is a merciful God; he will not abandon or destroy you or forget the covenant with your ancestors, which he confirmed to them by oath.
It is good that you recognize that He is God and that without Him we are nothing, that is why it is good for people to seek God without expecting anything in return. He is God and does His will when He believes it is necessary. He is a God of mercy who does justice and helps the thirsty.