As Christ followers who have faith that Jesus Christ is our Savior and our Lord, that his death on the cross was in our place as a substitute for our just penalty for sins, we have entered a covenant with God. It's not so much like Israel's covenant where they were setting it up. Rather the New Covenant in Christ (Hebrews 8) hardly was something we had a big gathering and agreed to. It was God's sovereign and prophesied plan coming to pass in Jesus' life, death, and raising again.
The thing is we sometimes operate in our Christian walks like we are dependent on stipulations to have God's love. Of course, this is not true, because Jesus does not change. His work does not change. God the Father does not change in accepting the cross as sufficient to forgive any believer's sins.
So you come to a verse like Malachi 3:6 "For I, the LORD, do not change; therefore you, O sons of Jacob, are not consumed."
We should learn to rest in that truth Malachi the prophet relayed to you and me.
We should learn in 2015 to agree with the statement of the Westminster "divines [who] concluded, he is "infinite, eternal, and unchangeable, in his being, wisdom, power, holiness, justice, goodness, and truth.""
God loves you consistently through it all in 2015, and is working all things together for the good of those who love Him.
So in your current situations or doubts or tough times, or even just in plain old uncertainty of the future when things are going well, learn to rest in God's unchangeable character in that He loves those who have faith in Jesus Christ.
God bless you!