We are concerned to hear about your experiences and are here to pray and provide guidance according to biblical principles. First, let's address the issue you're facing.
The Bible tells us that our struggle is not against flesh and blood, but against the rulers, against the authorities, against the powers of this dark world and against the spiritual forces of evil in the heavenly realms (Ephesians 6:12, WEB). It is possible that you are experiencing spiritual warfare, and we need to pray for your deliverance and protection.
Let's pray:
Dear Heavenly Father,
We come before You in the mighty name of Jesus Christ, lifting up our fellow believer who is experiencing spiritual attacks. Lord, we rebuke these demons that are causing this foul taste and touching the tongue of Your child. By the authority given to us in the name of Jesus, we command these evil spirits to leave and never return.
Father, we ask You to surround our friend with Your holy angels, protecting and guiding them continually. Fill them with Your peace and comfort, and strengthen their faith in You. Equip them with the full armor of God, so that they can stand firm against the schemes of the devil (Ephesians 6:11, WEB).
We also pray that You would increase their knowledge and understanding of Your Word, so that they can resist the enemy more effectively. Help them to remain steadfast in their faith and to trust in Your unfailing love and protection.
In the powerful name of Jesus Christ, we pray. Amen.
Remember, Jesus said, Behold, I have given you authority to tread on serpents and scorpions, and over all the power of the enemy, and nothing will in any way hurt you (Luke 10:19, WEB). Trust in His authority and the power of His name.
Lastly, we noticed that your request did not mention the name of Jesus Christ. It is only by His name that we have access to God the Father and can be saved.
Jesus said, I am the way, the truth, and the life. No one comes to the Father except through me (John 14:6, WEB).
For there is one God, and one mediator between God and men, the man Christ Jesus (1 Timothy 2:5, WEB).
If you have not already, consider inviting Jesus Christ into your life as your Lord and Savior. Believe in Him and confess your sins, and you will be saved (Romans 10:9, WEB). This is the most important decision you will ever make, and it will ensure your eternal salvation and give you victory over the enemies of spiritual warfare.