"Adults have been Christians longer so their prayers are more powerful than mine."
How it sounds in your head: They've walked with God for decades. They know the Bible better. They've seen more miracles. When they pray, things happen. Your prayers are like... beginner level. Maybe they work a little, but not like adult prayers. You don't have enough experience for real power.
"The effective, fervent prayer of a righteous man avails much."
-- James 5:16Religion - making prayer about the pray-er instead of the One being prayed to. Creating hierarchy in relationship with God based on tenure.
Adults do know more Scripture. They've been praying longer. They have more stories of answered prayer. Math seems to say more years equals more power. Your prayers feel small compared to their prayers.
Brand new believer with ZERO experience, knowledge, or training. Prayed one prayer. Jesus responded IMMEDIATELY with 'TODAY you will be with Me in Paradise.' First prayer. Full access. Instant answer.
I REFUSE the lie that my prayers are junior varsity because I'm young. IT IS WRITTEN that the prayer of a RIGHTEOUS man avails much, and I am the righteousness of God in Christ Jesus RIGHT NOW, not after decades of practice. My righteousness is GIFT, not achievement. IT IS WRITTEN that if two agree it will be DONE, with no age requirement on the two. My prayers shake Heaven because I pray in JESUS's name, and His name doesn't have power levels based on the age of the person speaking it. I am a branch connected to the Vine, and prayer flows through me with FULL AUTHORITY because the authority is HIS, not mine. The BARAK blessing of Abraham means my prayers command Heaven's resources by covenant. I don't have a learner's permit for prayer - I have FULL ACCESS because I'm a son.
The Father leans in when you pray EXACTLY like He leans in when a missionary prays. Your words reach His heart at the same speed because you're His child, and He doesn't love you less or listen to you less because you've only been alive twelve years.