We know Christ's life is in us through our faith in Him and the work of the Holy Spirit, as affirmed in John 5:40.
The assurance that Christ's life dwells in believers is a crucial tenet of Reformed theology, affirmed through faith and the regenerating work of the Holy Spirit. In John 5:40, Jesus explains, 'And ye will not come to me, that ye might have life,' highlighting that true life is found in Him. Moreover, the transformation and desire to seek Christ indicate His life at work within us. When believers face struggles with sin or feelings of dullness, it is the recognition of our dependence on Christ that reaffirms His life within us, providing comfort and hope. The conflict we experience—the struggle between the flesh and spirit—serves to remind us of our need for Christ's sustaining grace.
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