Every Christian face trial and temptation in life, unless they are not genuine Christians. In Matthew 4:1-11, Jesus was tempted by the devil immediately after forty days fasting, but Jesus withstood him. The devil hates those who do things right and he pursues them with all sorts of problems. We must be fortified against the devil's tactics inwardly and outwardly.
God also tries His beloved ones in order to strengthen us and know if we are truly His. In Genesis 22:1-19, God told Abraham to sacrifice his son Isaac to Him, even though He knew that Abraham waited so long for that child. It was just a test to know if Abraham was truly God's follower. Never for once think that because you do things right, you are free from the Lord's trials. In Job 1:8-12, God let Satan try Job because He wanted to prove to Satan that Job was truly a good man.
As gold is tested in fire, so human character is tested in the furnace of humiliation (Sirach 2:5). We have to be tried to know our true selves, our true hearts and our true feelings towards God. Never think that you are already made perfect. Times and seasons change, so does the human heart. We must always be ready to overcome trials and temptations when they come our way.