‘So that with good courage we say, The Lord is my helper, I will not fear. What will man do to me?'
And as a result of the certainty that we have that we know that He will not fail us or forsake us, we can say with good courage and confidence, ‘The Lord is my helper, I will not fear. What will man do to me?' (Psalms 118:6)
‘The Lord is my helper, I will not fear.' The One Who is sovereign over all is my sustenance and my provision. He is there to help me in all my ways. Having that certainty how can we be afraid of anything? Outside of quotations, ‘Lord' in Hebrews always refers to Jesus Christ. Compare here Psalms 118:6 LXX from where it is cited.
While the Greek word for Helper is different we may remind ourselves here of Jesus' promise of the Holy Spirit as our Helper, Encourager and Comforter in John 14:16-17; John 14:26; John 15:26; John 16:7), and of His words to His disciples at the end, ‘Do not let your hearts be troubled, believe in God, believe also in Me (John 14:1-2).'