The Saints share in Christ's glory, and are partakers in the divine nature. St. Paul says to imitate them. The Bible says that the saints in heaven are equal to the angels. The Catholic Church has a wealth of holy saints in heaven that have said many great things while they were alive. Protestants believe that saints are not worthy to ask for their intercession. They see saints as "dead" and contacting the "dead" is unbiblical. They also accused Catholics as saint worshipper. They, the Protestants, do not understand us. I think they can't read.
"Pray for us."
This line clearly says that we ask the saints to pray for us. Since the saints are in heaven, they are close to Jesus and God. We can ask the saint's prayer to be brought to Christ. Catholics do not think the saint do the miracles. It is through the saints that Christ works His miracles.
Worship and adoration is only reserved to God. Not one Catholic worship nor give adoration to the saints. We only give them honor and veneration. They are people who have lived a virtuous and faithful life. By their example we know that they are in Heaven and dwell in the Kingdom of Heaven with Jesus.
Where is it in the Bible?
John 17:22- "I have given them the glory that you gave me, that they may be one as we are one:"
Revelation 8:4- "The smoke of the incense, together with the prayers of the saints, went up before God from the angel's hand."
Luke 20:36- "and they can no longer die; for they are like the angels. They are God's children, since they are children of the resurrection."
Hebrews 13:7- "Remember your leaders, who spoke the word of God to you. Consider the outcome of their way of life and imitate their faith."
2 Peter 1:4- "Through these he has given us his very great and precious promises, so that through them you may participate in the divine nature, having escaped the corruption in the world caused by evil desires."
If they say the Bible is the only authority, then doesn't the Bible clearly states Catholic beliefs? So you decide which church is to be called "Evangelical"?
The Council of Trent
"that the saints who reign together with Christ offer up their prayers to God for men, that it is good and beneficial suppliantly to invoke them and to have recourse to their prayers, assistance and support in order to obtain favors from God through His Son, Jesus Christ our Lord, who alone is our redeemer and savior.... and that they think impiously who deny that the saints who enjoy eternal happiness in heaven are to be invoked, or who assert that they do not pray for men, or that our invocation of them to pray for each of us individually is idolatry, or that it is opposed to the word of God and inconsistent with the honor of the one mediator of God and men, Jesus Christ, or that it is foolish to pray vocally or mentally to those who reign in heaven. Also, that the holy bodies of the holy martyrs and of others living with Christ, which were the living members of Christ and the temple the Holy Ghost,"- Council of Trent session 25