How do we know prayer is effective in a believer's life?

Prayer's effectiveness in a believer's life stems from the intercessory role of Christ, who, as shown in Romans 8:26-27, helps us in our weaknesses and intercedes for us when we do not know how to pray. This divine assistance is rooted in the perfect will of God, meaning our prayers align with His purposes. James 5:16 also emphasizes the power of prayer, stating that the effectual fervent prayer of a righteous man avails much. Ultimately, prayer is effective not because of our merits or efforts, but because it is offered in the name of Christ, who has made the way for us to communicate with God. Believers can be confident that their prayers rise before God as sweet incense, symbolizing Christ's intercession and the acceptance of their petitions.