Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin; (I Peter 4:1)
Jesus had already told the disciples that they would be persecuted for His name sake:
But before all these, they shall lay their hands on you, and persecute you, delivering you up to the synagogues, and into prisons, being brought before kings and rulers for my name's sake. (Luke 21:12)
When you combine that with the everyday situations of life, money, finances, spouses, jobs, children, etc., trying to live a Godly life in accordance to the word of God can indeed be uncomfortable if not downright stressful. But God, in His infinite love and wisdom knew that we could not survive this journey without some supernatural assistance. The children of Israel in their wilderness experience bears witness to this. When they didn't feel the power of His presence, they quickly forgot God. They had all types of sacrifices they were to perform to pardon them from sin. But with the final blood sacrifice of Jesus, we no longer have to perform this ritual. God provides us with power from on high so that we never forget who we are and to whom we belong.
Jesus made an important promise to His followers regarding spiritual power:
. . . Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call. (Acts 2:38-39)