This would carry more weight if there was any evidence you had done the same
No you didn't. What you said was
You directly tied the bestowal of Mercy to the effort of man, a direct contradiction of both versus.
You intercession is irrelevant. It's up to God regardless of your prayer.
At least that is the case with the scripture you have provided so far.
Helps with what?
I prayed and received confirmation with a yes awhile back, then received a few more dreams as confirmation also. It usually occurs in a 3 day span for me. People did that in the Bible and it still works today thankfully. Fasting helps also.
But if I revealed this before, would you have believed considering you are not of the faith?
I get refuted a lot, even with fellow believers which is saddening and it grieves God. Comes with the territory. God did say His people will get persecution.
Trying to spiritually discern scripture as an unsaved person will see every verse in the Bible as contradictory. I've been guilty of the same as I used to question the same way you did long ago before getting to know Him myself and had to repent.
Claiming to know God without a relationship though isn't recommended even with His word in hand as it becomes condemning and contradictory instead of convicting and confirming. Prayer is just communicating with God such as asking Him simple questions: "Is what this person said correct?" When you don't hear an answer, sometimes He'll send a prophet to you, give you a dream, or you can ask for types of confirmation especially if it lines up with His word. This builds faith as well.
A relationship with God, the Holy Spirit and Christ is very necessary for discernment. It's why I suggested prayer and confirmation. But for that to happen, you must come to Christ first and submit to Him.
Then answers can be revealed in time by God as He begins to teach and potter those in their daily walk whenever and however He desires to reveal them.
God is not a respecter of persons and it is truly up to Him if He wants to bestow mercy on someone. But He does give others favor especially for His true chosen ones (Saints) that can earnestly pray for someone and God will shift and move on their behalf because of their faith and relationship with Him.
This works especially if they're living their lives for Him doing His will listening to His voice and obeying His commands on a daily basis to the best of their own ability as no one is perfect. This is expressed in Jeremiah 7:23 and what follows is what Christ said in John 10:26-30.
If you love reading the Bible and submitting scripture references which is awesome by the way, then please reconsider in becoming His child and seek the answers through Him.
Shalom and blessings,
Bro. Daniel