For the Father Himself tenderly loves you because you have loved Me and have believed that I came out from the Father. Amplified Bible John 16:27
To be tender is to be gentle and kind, compassionate and easily moved with sympathy. God the Father knows that man is like the grass of the earth, fragile and weak on their own strength. He made us out of the dust of the earth, and our creator has mercy on us. His heart is full of lovingkindness toward man. When you believe in His Son, and love Jesus, then you have God's heart as well.
It's sort of like when you have a child that brings a friend home after school. You watch and see them interact and play. Your child is enjoying the company of his friend. The more time they spend together, the more you take notice whether it is a good and healthy relationship. A bond of friendship is being created. But it is also being created with you. Because that young friend is kind to your child, and his parents are caring, you in turn are welcoming to that child. You think if he makes my child happy, then they are welcome in our house. You have no problem inviting them over for dinner to hang out with the family.
The Father loves us, because we love His Son. We are welcome into His family. Just to think that God is a tender Father is not an easy thing that we have grown up to believe. In fact, it takes some getting used to for many of us. It did me. I was not raised to see God as gentle and loving, or as a Father. Our priest at church was staunch and stern. If there was any feeling I had when I saw him, it was fear of his stern response. In those days of growing up, I remember being hit on the hand with a ruler, because I forgot my library book. Even as a 2nd grader, I was made to run home alone, down the street to grab the book and return it quick. Good thing I lived close. Can you imagine? Only 7 yrs old. It wasn't until many years as an adult, even after I became a true believer, that I began to discover the true character of God. And it was only through His Word that that happened. Our views of Him can change, but it takes looking into the pure Word of truth, or seeing the example of His love before us. The key is to open our hearts to Him and ask Him to change our thinking. It's never too late...