We are not told that Adam and Eve are saved, If they believed God’s promise of one who would ‘bruise the head of the serpent’ i.e. undo the consequence of the serpent’s deception, and lived faithful lives, then they will be raised to eternal life in the kingdom of God. Currently they remain in the dust awaiting the resurrection.
Genesis 3:17 Then to Adam He said, "Because you have heeded the voice of your wife, and have eaten from the tree of which I commanded you, saying, ‘You shall not eat of it’: "Cursed is the ground for your sake; In toil you shall eat of it All the days of your life. 18 Both thorns and thistles it shall bring forth for you, And you shall eat the herb of the field. 19 In the sweat of your face you shall eat bread Till you return to the ground, For out of it you were taken; For dust you are, And to dust you shall return."
Jesus washed his disciples’ feet as an example to show them that they must serve one another.
John 13:4 (Jesus) rose from supper and laid aside His garments, took a towel and girded Himself. 5 After that, He poured water into a basin and began to wash the disciples’ feet, and to wipe them with the towel with which He was girded. 6 Then He came to Simon Peter. And Peter said to Him, "Lord, are You washing my feet?" 7 Jesus answered and said to him, "What I am doing you do not understand now, but you will know after this." 8 Peter said to Him, "You shall never wash my feet!" Jesus answered him, "If I do not wash you, you have no part with Me." 9 Simon Peter said to Him, "Lord, not my feet only, but also my hands and my head!" 10 Jesus said to him, "He who is bathed needs only to wash his feet, but is completely clean; and you are clean, but not all of you." 11 For He knew who would betray Him; therefore He said, "You are not all clean." 12 So when He had washed their feet, taken His garments, and sat down again, He said to them, "Do you know what I have done to you? 13 "You call me Teacher and Lord, and you say well, for so I am. 14 "If I then, your Lord and Teacher, have washed your feet, you also ought to wash one another’s feet. 15 "For I have given you an example, that you should do as I have done to you. 16 "Most assuredly, I say to you, a servant is not greater than his master; nor is he who is sent greater than he who sent him. 17 "If you know these things, blessed are you if you do them.
Jesus had already made clear the need to serve one another elsewhere.
Matthew 20:25 But Jesus called them to Himself and said, "You know that the rulers of the Gentiles lord it over them, and those who are great exercise authority over them. 26 "Yet it shall not be so among you; but whoever desires to become great among you, let him be your servant. 27 "And whoever desires to be first among you, let him be your slave — 28 "just as the Son of Man did not come to be served, but to serve, and to give His life a ransom for many."
Service as an act of love should be the Christian ethic.
1 John 3:16 By this we know love, because He laid down His life for us. And we also ought to lay down our lives for the brethren.
I hope this helps