Faith works through love.

If our faith is weak, we should check how our love is doing.
God's love makes our faith meaningful and effective.
When we receive the love of God and let it do its work in us, we are not tormented by ideas that God will punish or forsake us.

We are free to live and act out of His love.
When God's love has done its work in us, there is no more room in us for fear; it is booted out because fear produces torment, which means punishment or penalty.
Love casts out fear, which is the opposite of faith.

The Bible says, "There is no fear in love; but perfect love casts out fear, because fear involves torment"
1 John 4:18.
Since God is love and faith comes by hearing the Word of God, then faith must be all about expressing the love of God.
God is love.

Love gives and serves and that is what God is all about.

"For God so loved the world that He gave His only begotten Son."
John 3:16
Faith without love is meaningless.

Paul said, "Though I have all faith, so that I could remove mountains, but have not love, I am nothing."  Faith can move mountains, but if we do not have love at work in us, then it doesn't make any difference.
The love we need is the love of God working in us and through us to reveal His righteousness.

Only faith working through God's love is able to bring things about.
The Amplified Bible translates it as "faith activated and energized and expressed and working through love."
Galatians 5:6, ".......but faith working through love."

Only faith, working through love, means anything.
We cannot mix faith and fear.

We have a choice, to listen the Word of God and let it fill our hearts and meditate on it or we can choose the voices of fear, the whispers of the enemy, the lies of the devil.
Jesus teaches us just as He taught the disciples to speak to the mountain, with only faith in our hearts and watch as the mountain obeys.
We must chose faith.

We cannot let the words of others contradict the Word of God and get us into fear.

We cannot poison our hearts and weaken our faith with fear.
If we focus our attention on Jesus and His finished work on the cross, we will also receive healing.

That means we are to look only at Him and not the symptoms.
In the Old Testament, when the Israelites were bitten by serpents, they had to look steadfast on the brass serpent on the pole in order to be healed, in Numbers 21:8-9.

That brass serpent was a type of Jesus who became sin for us when He hung on the Cross,   
2 Corinthians 5:21.
As we continually keep our eyes on Jesus and draw strength from Him, sickness and disease has to go.
"I can do all things through Christ which strengtheneth me."
Philippians 4:13

Jesus is our strength.
To present our bodies as sacrifices to God, Paul was saying we need to get our bodies lined up with God's Word and believe that Jesus took our infirmities and bore our sicknesses and diseases.

Then we can present them as living sacrifices.