God sees, hears and knows everything—including our prayers. Nothing escapes his attention. So why then does it seem that God would not listen to the people’s cries for help? Jeremiah 11:11 says: Therefore this is what the Lord says: ‘I will bring on them a disaster they cannot escape. Although they cry out to me, I will not listen to them.
There are several possible reasons.
In this case, God did not respond because judgment was unavoidable. Judah had disobeyed God’s laws and ignored his pleas for so long that judgment was, in effect, already on the way. Their cries were too little, too late. God even told Jeremiah not to pray for the people (see Isa 14:11–12)—that not even Moses and Samuel could have persuaded him to offer further compassion to them (see Isa 15:1).
It’s also possible that people sometimes sabotage their own prayers. The Bible mentions several attitudes and actions that can short-circuit our prayers: sin (see Ps 66:18; Isa 59:2; Jer 14:10–12), disobedience (see Pr 28:9), hypocrisy and insincerity (see Isa 29:13; Mal 1:7–9), wrong motives (see Mt 6:5–6; Lk 18:11–14; Jas 4:3), lack of faith (Heb 11:6; Jas 1:6) and even marital problems (see 1Pe 3:7).
Finally, what sometimes appears to be no answer to prayer may actually be a delayed answer (see Da 10:12–13). Other times God may deny our request in order to give us something better than what we knew to ask for.
In Daniel 10, He tells Daniel: “Do not be afraid, Daniel. Since the first day that you set your mind to gain understanding and to humble yourself before your God, your words were heard, and I have come in response to them. 13 But the prince of the Persian kingdom resisted me twenty-one days. Then Michael, one of the chief princes, came to help me, because I was detained there with the king of Persia. 14 Now I have come to explain to you what will happen to your people in the future, for the vision concerns a time yet to come.”
This is why faith is so importance. All prayers are heard. We just have to be patient for what-ever answer comes our way and try to understand the resolution he provides to us.